Alert archive / Texas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 82, NWS Midland/Odessa, TX

April 15, 2012Glasscock County, Howard County, Texas

NWS Midland/Odessa, TX issued this severe thunderstorm warning at Apr 15, 2012, 1:18 AM CDT for Glasscock County, Howard County, Texas. It was in force for 57 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 15, 2012, 1:18 AM CDT (06:18 UTC)
Expired
Apr 15, 2012, 2:15 AM CDT
In force
57 min
Issued by
NWS Midland/Odessa, TX
Area
Storm-based polygon

Counties Glasscock County, TX, Howard County, TX

The radar

The Midland/Odessa radar (KMAF), 87 km from the middle of the area, began a volume at 06:20 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Apr 15, 1:44 AM CDTHAIL 1Big Spring, TX

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 14, 10:29 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 6.3 hours before the alert went out and 88 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Midland Regional, TX at 00:00Z on 2012-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 815 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Midland Regional, TX at 00:00Z on 2012-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 153 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
815 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
2403 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
153 m²/s²
0-3 km storm-relative helicity
205 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

748 
WUUS54 KMAF 150618
SVRMAF
TXC173-227-150715-
/O.NEW.KMAF.SV.W.0082.120415T0618Z-120415T0715Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
118 AM CDT SUN APR 15 2012

THE NATIONAL WEATHER SERVICE IN MIDLAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN GLASSCOCK COUNTY IN WEST TEXAS...
  EASTERN HOWARD COUNTY IN WEST TEXAS...

* UNTIL 215 AM CDT

* AT 115 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  MIDWAY...OR NEAR BIG SPRING...MOVING NORTHEAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT THE FOLLOWING LOCATIONS...
  COAHOMA...
  VINCENT...
  BIG SPRING...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH... PREPARE
IMMEDIATELY FOR DAMAGING WINDS... DESTRUCTIVE HAIL... AND DEADLY
CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO SHELTER...
PREFERABLY INSIDE A STRONG BUILDING AWAY FROM WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 AM CDT SUNDAY
MORNING FOR WEST TEXAS.

&&

LAT...LON 3210 10120 3210 10126 3196 10126 3197 10167
      3252 10136 3251 10119
TIME...MOT...LOC 0618Z 234DEG 37KT 3232 10140

$$
1 follow-up statement
656 
WWUS54 KMAF 150653
SVSMAF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
153 AM CDT SUN APR 15 2012

TXC173-227-150715-
/O.CON.KMAF.SV.W.0082.000000T0000Z-120415T0715Z/
GLASSCOCK TX-HOWARD TX-
153 AM CDT SUN APR 15 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM CDT
FOR EASTERN HOWARD AND NORTHEASTERN GLASSCOCK COUNTIES...

AT 148 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR COAHOMA...OR ABOUT 15 MILES EAST OF BIG SPRING...MOVING
NORTHEAST AT 45 MPH.

SOME LOCATIONS AFFECTED BY THE SEVERE THUNDERSTORM INCLUDE...EXTREME 
EAST CENTRAL HOWARD COUNTY...INCLUDING INTERSTATE 20 WEST OF BIG 
SPRING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS... DEADLY CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. REMEMBER... IF YOU CAN
HEAR THUNDER... YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. SEEK
SAFE SHELTER NOW.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 AM CDT SUNDAY
MORNING FOR WEST TEXAS.

&&

LAT...LON 3210 10120 3210 10126 3196 10126 3197 10158
      3225 10137 3251 10127 3251 10119
TIME...MOT...LOC 0652Z 234DEG 37KT 3229 10119

$$

The office that day

Everything else NWS Midland/Odessa, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 14, 10:16 PM CDTSevere Thunderstorm WarningMAFDawson, Gaines59 min
Apr 14, 11:13 PM CDTSevere Thunderstorm WarningMAFBorden, Dawson62 min
Apr 15, 12:24 AM CDTSevere Thunderstorm WarningMAFBorden, Dawson, Howard, Martin, Scurry51 min
Apr 15, 12:32 AM CDTSevere Thunderstorm WarningMAFGlasscock, Howard, Martin, Midland58 min
Apr 15, 1:00 AM CDTSevere Thunderstorm WarningMAFGlasscock, Midland, Reagan, Upton60 min
Apr 15, 1:40 AM CDTSevere Thunderstorm WarningMAFGlasscock, Howard, Reagan, Upton65 min
Apr 15, 1:59 AM CDTSevere Thunderstorm WarningMAFMitchell61 min
Apr 15, 5:16 AM CDTRed Flag WarningMAFAndrews, Crane, Ector, Gaines, Loving, Midland and 4 more14 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2012Every severe thunderstorm warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.